Crack growth in Mil Annealed Ti-6Al-4V structural components

S. Pitt, R. Jones, B Farahmand

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review


There is an increasing use of titanium in primary aircraft structures with bulkheads in the F-22, Super Hornet, and the Joint Strike Fighter being made of titanium. Until recently it was thought that cracking in titanium and high strength aerospace steels was relatively well understood. However, this paper analyses a series of NASA, and Boeing studies into cracking in Ti-6AL-4V to reveal a weak R ratio effect with little closure in Region II. We also see that, in each case, the data conforms to the Generalised Frost-Dugdale crack growth law. This study also implies that the mechanisms driving cracking in high strength aerospace steels and Mil Annealed Ti-6Al-4V are similar.

Original languageEnglish
Title of host publication12th International Congress on Fracture 2009, ICF-12
Number of pages7
Publication statusPublished - 2009
EventInternational Congress on Fracture 2009 - Ottawa, Canada
Duration: 12 Jul 200917 Jul 2009
Conference number: 12th


ConferenceInternational Congress on Fracture 2009
Abbreviated titleICF 2009

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